CN215462033U - Ethanol separation recovery system in konjaku flour production - Google Patents
Ethanol separation recovery system in konjaku flour production Download PDFInfo
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- CN215462033U CN215462033U CN202121145605.1U CN202121145605U CN215462033U CN 215462033 U CN215462033 U CN 215462033U CN 202121145605 U CN202121145605 U CN 202121145605U CN 215462033 U CN215462033 U CN 215462033U
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Abstract
The utility model relates to an ethanol separation and recovery system in konjac flour production, which comprises a raw material tank, a separation tower and a reflux tank; the raw material tank is connected with a feed inlet in the middle of the separation tower through a first-stage heat exchanger and a second-stage heat exchanger in sequence through pipelines, a gas outlet in the top of the separation tower is connected with a liquid inlet of a reflux tank through the first-stage heat exchanger and a condenser in sequence through the pipelines, a liquid outlet of the reflux tank is connected with the feed inlet in the top of the separation tower through the pipelines, and a discharge outlet in the upper part of the separation tower is connected with a finished product storage tank through a finished product cooler through the pipelines. The concentration of the ethanol finished product obtained by separation and recovery is high, the concentration of the ethanol can reach about 96 percent, and the steam consumption is low.
Description
Technical Field
The utility model relates to the technical field of ethanol separation and recovery, in particular to an ethanol separation and recovery system in konjac flour production.
Background
In the production process of the high-purity konjac flour, ethanol is generally used as a dissolution inhibitor to wash off excessive starch. After the cleaning is finished, the ethanol also contains partial starch, so that the quality and the reuse of the ethanol are influenced. The existing production process is that ethanol is precipitated in a storage tank, the mixture of the precipitated starch and the ethanol is subjected to pressure filtration by a pressure filter, the crude ethanol after the pressure filtration enters a vaporizer for vaporization, and then the ethanol is recovered. Because the mixed liquor contains a large amount of impurities and a small amount of starch, the impurities and the starch are difficult to separate in the vaporization process, the ethanol content in the discharged waste liquor reaches 1-2%, the ethanol loss is serious, the steam consumption in the vaporization engineering is large, the gas consumption per ton of finished ethanol reaches 2.5 tons, and the production cost of enterprises is increased. Therefore, an efficient and energy-saving ethanol separation and recovery system is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides an ethanol separation and recovery system in konjac flour production aiming at the defects of the prior art.
The utility model is realized by the following technical scheme, and provides an ethanol separation and recovery system in konjac flour production, which comprises a raw material tank, a separation tower and a reflux tank; the raw material tank is connected with a feed inlet in the middle of the separation tower through a first-stage heat exchanger and a second-stage heat exchanger in sequence through pipelines, a gas outlet in the top of the separation tower is connected with a liquid inlet of a reflux tank through the first-stage heat exchanger and a condenser in sequence through the pipelines, a liquid outlet of the reflux tank is connected with the feed inlet in the top of the separation tower through the pipelines, and a discharge outlet in the upper part of the separation tower is connected with a finished product storage tank through a finished product cooler through the pipelines.
Preferably, the bottom of the separation tower forms a closed loop with the reboiler through a pipeline.
Preferably, the reboiler is connected to the boiler steam line by a line.
Preferably, the waste liquid outlet at the bottom of the separation tower is connected with a waste water treatment system through a secondary heat exchanger by a pipeline.
Preferably, the condensers are in two groups.
The raw material tank is internally filled with crude ethanol mixed with starch and impurities, the crude ethanol enters the separation tower after being heated by the primary heat exchanger and the secondary heat exchanger, the ethanol is separated from the impurities and the starch in the separation tower, the temperature is raised for vaporization, then the crude ethanol flows to the reflux tank through the primary heat exchanger and the condenser in sequence, the primary heat exchanger heats the raw material through ethanol steam separated from the top of the separation tower, and waste liquid at the bottom of the separation tower of the secondary heat exchanger heats the raw material.
And the ethanol in the reflux tank enters the separation tower through a feed inlet at the top of the separation tower, the ethanol returning to the separation tower is heated and vaporized again, and then the ethanol is condensed by a finished product cooler to obtain an ethanol finished product with the concentration of about 96 percent.
The utility model has the beneficial effects that:
the concentration of the finished ethanol product obtained by separation and recovery of the utility model is high, the concentration of the ethanol can reach about 96%, the steam consumption is small, the steam consumption of each ton of finished ethanol product is 0.95 ton, compared with the traditional evaporation process, 1.55 ton of steam is saved, the discharge amount of waste liquid is less, and 1 ton of waste liquid can be discharged less when each 1 ton of finished product is produced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
shown in the figure:
1. the system comprises a raw material tank, 2, a separation tower, 3, a reflux tank, 4, a primary heat exchanger, 5, a secondary heat exchanger, 6, a condenser, 7, a finished product cooler, 8, a finished product storage tank, 9, a reboiler, 10, a boiler steam pipeline, 11 and a wastewater treatment system.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 1, the present invention comprises a raw material tank 1, a separation column 2, and a reflux tank 3. Head tank 1 is connected with 2 middle part feed inlets of knockout tower through pipeline order through one-level heat exchanger 4, second grade heat exchanger 5, and 2 top gas outlets of knockout tower are connected with 3 inlets of reflux drum through one-level heat exchanger 4, condenser 6 through the pipeline order, and 3 liquid outlets of reflux drum are connected with 2 top feed inlets of knockout tower through the pipeline, and 2 upper portion discharge gates of knockout tower are connected with finished product storage tank 8 through pipeline through finished product cooler 7. In this embodiment, the condensers 6 are two sets, and the condensers 6 and the finished product coolers 7 are filled with cooling water to condense the materials.
The bottom of the separation column 2 forms a closed loop with a reboiler 9 by means of a line, said reboiler 9 being connected with a boiler steam line 10 by means of a line. And a waste liquid outlet at the bottom of the separation tower 2 is connected with a waste water treatment system 11 through a second-stage heat exchanger 5 by a pipeline.
The raw material tank 1 is internally filled with crude ethanol mixed with starch and impurities, the crude ethanol is heated by the primary heat exchanger 4 and the secondary heat exchanger 5 and then enters the separation tower 2, the ethanol is separated from the impurities and the starch in the separation tower 2, the temperature is raised for vaporization, then the crude ethanol flows to the reflux tank 3 through the primary heat exchanger 4 and the condenser 6 in sequence, the primary heat exchanger 4 heats the raw material through ethanol steam separated from the top of the separation tower 2, and the secondary heat exchanger 5 heats the raw material through waste liquid at the bottom of the separation tower 2.
And the ethanol in the reflux tank 3 enters the separation tower 2 through a feed inlet at the top of the separation tower 2, the ethanol returning to the separation tower 2 is heated and vaporized again, and then the ethanol is condensed by a finished product cooler 7 to obtain an ethanol finished product with the concentration of about 96 percent.
The concentration of the finished ethanol product obtained by separation and recovery of the utility model is high, the concentration of the ethanol can reach about 96%, the steam consumption is small, the steam consumption of each ton of finished ethanol product is 0.95 ton, compared with the traditional evaporation process, 1.55 ton of steam is saved, the discharge amount of waste liquid is less, and 1 ton of waste liquid can be discharged less when each 1 ton of finished product is produced.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (5)
1. Ethanol separation recovery system in konjaku flour production, its characterized in that: comprises a raw material tank, a separation tower and a reflux tank; the raw material tank is connected with a feed inlet in the middle of the separation tower through a first-stage heat exchanger and a second-stage heat exchanger in sequence through pipelines, a gas outlet in the top of the separation tower is connected with a liquid inlet of a reflux tank through the first-stage heat exchanger and a condenser in sequence through the pipelines, a liquid outlet of the reflux tank is connected with the feed inlet in the top of the separation tower through the pipelines, and a discharge outlet in the upper part of the separation tower is connected with a finished product storage tank through a finished product cooler through the pipelines.
2. The system for separating and recovering ethanol in konjac flour production according to claim 1, wherein: the bottom of the separation tower forms a closed loop with a reboiler through a pipeline.
3. The system for separating and recovering ethanol in konjac flour production according to claim 2, wherein: the reboiler is connected with a boiler steam pipeline through a pipeline.
4. The system for separating and recovering ethanol in konjac flour production according to claim 1, wherein: and a waste liquid outlet at the bottom of the separation tower is connected with a waste water treatment system through a second-stage heat exchanger by a pipeline.
5. The system for separating and recovering ethanol in konjac flour production according to claim 1, wherein: the number of the condensers is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121145605.1U CN215462033U (en) | 2021-05-26 | 2021-05-26 | Ethanol separation recovery system in konjaku flour production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121145605.1U CN215462033U (en) | 2021-05-26 | 2021-05-26 | Ethanol separation recovery system in konjaku flour production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215462033U true CN215462033U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121145605.1U Active CN215462033U (en) | 2021-05-26 | 2021-05-26 | Ethanol separation recovery system in konjaku flour production |
Country Status (1)
| Country | Link |
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| CN (1) | CN215462033U (en) |
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2021
- 2021-05-26 CN CN202121145605.1U patent/CN215462033U/en active Active
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